We’re headed into another peak retail season, which runs from now through Christmas Day. Considering not-so-recent trends in Shopping and mobile, many marketers are hedging their bets on this being the biggest online retail season yet. Preparation is key, and understanding what went well and what didn’t last year—and when it did and didn’t—will help guide decision-making in the coming weeks.

When the volume is so high, each day could make or break the quarter. Here are three things you should be doing on a day-to-day basis to increase the likelihood of favorable outcomes.

1. Monitor Top SKUs

Your buyers should have a list of products they expect will be major sellers this season. These could be products where inventory is so deep no one can compete, or buyers purchased at a bulk rate and can offer the best pricing.

Work with your buyers to understand what these products are, and optimize them on a per-item basis with SKU-level product groups in a High Priority campaign. Monitor these daily and keep an eye on inventory—when they start to sell out, pull back so that you don’t end up aggressively pushing nearly sold-out products.

2. Segmentation

In addition to the proactive management of products you’re bullish about, the high volume is going to yield insights of its own. Monitor your broader product groups—defined by Category, Brand, Custom Labels, etc.—for segmentation opportunities.

You’ll start the season with a single bid for a Brand product group. But, as volume dictates, some products or sets of products within the group will warrant segmenting and assigning a new bid based on how they’ve performed to date. This is a crucial step to optimizing and hitting performance goals on an ongoing basis.

3. Bidding

As you structured your campaigns, you established the levers and switches you’re going to use to effectively manage your product mix and hit performance goals.

The most important pieces of all this will be to understand how you want to bid these levers and how to stay on top of everything. Be considerate of sales, key dates, top products, and inventory / stock levels. A combination of proactive strategies (e.g., Brand X is 20% off next week) and reactive strategies (e.g., Brand Y is selling amazingly well over the past week) will be necessary to generate the best results.

Be aggressive where you expect the best returns and don’t hesitate to pull back on things that aren’t producing. Good luck!